Transmission gear



June 7, 1932.

T. H. ORR 1,861,480

TRANSMI S S I'ON GEAR Filed May 15, 1930 .3 Sheets-Sheet l Tlwmli. 01m,

gme/ntoz June 7, 1932. H, m 1,861,480

TRANSMISSION GEAR Filed May 15, 1930 5 Sheets-Ellen 2 3 Thomas if. 0117?, 6,2 3! ll gum 3mm;

70 [Eu 1 mmfg l v J9 sum I3 99 a" June 7, 1932. T. H. ORR

TRANSMISSION GEAR Filed May 13. 1930 5 Sheets-Sheet 3 Thom J1. 02 1 Patented June 7, 1932 UNITED FFHCE TRANSMISSION GEAR Application filed May 13,

This invention relates to new and useful improvements in driving and feeding mechanisms, and particularly to driving and feeding mechanisms which are especially adapted for use in connection with metal working machines, such as lathes, reamers, and the like.

One object of the invention is to provide a novel and improved driving mechanism by means of which a cutter and a carriage feed means may be simultaneously driven, to actuate the same cutter, and feed the work thereto.

Another object is to provide novel and improved means whereby to drive the cutter at different speeds, while driving the feeding mechanism at a constant speed. 7

A further object is to provide, in a mechanism of this character, means whereby the carriage may be moved independently of the driving mechanism, whereby to permit proper positioning of the work, supported on the carriage, with relation to the cutters of the machine.

Other objects and advantages will be apparent from the following description when taken in connection with the accompanying drawings.

In the drawings:

Figure 1 is a side elevation of the driving mechanism, the casing being in section.

Figure 2 is a vertical sectional view on the line 22 of Figure 1, looking in the direction of the arrows, which point toward the i 13ft.

Figure 3 is a vertical sectional view on the line 22 of Figure 1, looking in the direction of of the arrows which point toward the right.

Figure 4 is a vertical sectional detail view on the line 44 of Figure 3.

Figure 5 is a horizontal sectional detail view on the line 55 of Figure 3.

Figure 6 is a detail sectional view of one of the shaft end bearings.

Referring particularly to the accompanying drawings, 10 represents a casing including the vertical end walls 11 and 12, and the side walls 13 and 14, and having therein the horizontal wall 15. Mounted in the casing,

1930. Serial No. 452,005

below the wall 15 is an electric motor 16, having on its shaft 17, the gear 18. The end of the motor shaft 17, which carries the gear 18, is supported in a socket bearing 19, disposed within an opening 20, in the wall 12, of the casing. Mounted in the wall 12, above the socket 19, is a similar bearing socket 21, and supported in this socket is one end of an inwardly extending stub shaft 22, on which are mounted the gears 23 and 24, the former being of greater diameter than the latter. Supported in a similar socket 25, in the wall 12, directly above the stub shaft 22, is a slightly longer, inwardly extending stub shaft 26, on which are mounted the gears 27 and 28, and the gear 29, the last-named gear being mounted on the inner end of said shaft. The gear 27 is of greater diameter than the gear 28, and meshes with the smaller gear 24 of the shaft 22, while the gear 28 meshes with an adjacent gear 30, on a stub shaft 30, supported in the wall 12.

In the upper portion of the casing, and supported in the bearings 31, carried by the end walls 11 and 12, is a longitudinally extending shaft 32, on'which are mounted the gears 33 and 34, the former of which is slight- 1y smaller in diameter than the latter. Below the shaft 32, and slightly to one side thereof, is a longitudinal shaft 35, and slidably mounted on this is a collar 36, on the opposite ends of which are mounted the gears 37 and 38, the former of which is of greater diameter than the latter. The collar is peripherally grooved and receives the shifting fork 39, which is carried by the block 40, slidably supported on the longitudinal shaft 41, mounted in the casing, adjacent the shaft 35. Slidable on one end of the shaft is a similar grooved collar 42, which receives a shifting fork 43, carried by the block 44, which is slidable on the shaft 41. Adjacent the other end of the shaft 35 is mounted a slidable peripherally grooved collar 45, in which is engaged the shifting fork 46, carried by the slidable block 47, of the'shaft 41. The collar 42 carries the gear 48, which is adapted to be moved into and out of meshing engagement with the gears 29 and 30. Upon shifting the collar 36 in one direction, the

gear 37 will mesh with the gear 33, while upon shifting said collar in the opposite direction, the gear 38 will mesh with the gear 34. The collar 45 carries the gear 49, as seen in Figures 1 and 2. On an inwardly extending stub shaft 50, supported in the end wall 11, is a gear 51, which is adapted to be meshed with the gear 49, upon sliding the collar 45 to the left, in Figure 1. Also supported in the end wall 11 is a stub shaft 52, having thereon the gears 53 and 54, of equal diameter, and also the smaller gear 55, the latter of which meshes with the larger gear 56, on the inner end of the screw shaft 57 ,supported in the end wall 11. It will be noted that the gear 49 may mesh with the gears 51 and 54. Thus, upon sliding the collar 45 to the left, in Figure 1, to a certain degree, the gear 49 will mesh with the gear 51, and when moved in the opposite direction, said gear 49 will mesh with the gear 54.

Mounted in the side wall 14, of the casing, are the three rock shafts 58, 59, and 60, the former of which is located adjacent the collar 45, the second one near the collar 36, while the latter is located near the collar 42-. On the outer ends, respectively of these shafts are the vertical levers 61, 62, and 63, while on the inner ends are the arms 64, 65, and 66, respectively. The arm 64 extends upwardly and is terminally provided with an eye 67 which receives a pin 68, carried by the block 47. The arm 65 extends upwardly and is terminally provided with the eye 69, which receives the pin 70, of the block 40, while the arm 66, which also extends upwardly, is provided with a terminal eye 71, receiving the pin 72, of the block 44. By this construction, when one of the levers 61, 62, or 63 is shifted in one direction or the other, to rock its corresponding shaft, its eye-carried arm will shift the block engaged by such eye, whereby to move the corresponding collar, and thereby engage or disengage the gears carried by the collars, with respect to the gears of the gear set, as will be readily understood. The engagement and disengagement of the gears 30 and 37, with respect to the gears 34 and 33, is accomplished by the movement of the lever 62 in one direction or the other, while the lever 63 controls the engagement and disengagement of the gear 48, with respect to the gears 27, 28, and 29.

The shaft 32 extends beyond the end wall 11 of the casing, and is adapted to support a metal working tool, holder 32, while the shaft 57 is adapted to drive a work-supporting carriage, also not shown, but will be readily understood.

WVhen the motor is started, and assuming that the gears are in neutral, the operator moves the lever 63 to the left, as viewed in Figure 1, which engages the gear 48 with the gear 29. The drive from the motor is then through the gears 18, 23, 24, 27, 29,. and

48, which drives the shaft 35. The operator now shifts the lever 62 to the right or left, as viewed in Fi ure 1. Assuming that the lever has been shifted to the right, it will be seen that the gear 37 will be brought into mesh with the gear 33, of the shaft 32 resulting in the rotation of this shaft at a predetermined speed. If, however, the lever is moved to the left, the gear 38 will mesh with the gear 34, of the shaft 32, and in View of the fact that the gear 38- is smaller than the gear 34, the speed of the shaft 32 will be increased.

To cause the rotation of the feed screw shaft 5.7, the operator shifts the lever 61 to the right or left, in accordance with the speed and direction in which he desires said shaft to be rotated. If he wishes the shaft 57 to turn to the left, he moves the lever 61 to the right, as viewed in Figure 1, which engages the gear 49 with the gear 54. Transmission will then be from shaft 35, by means of gear 49, gear 54, gears 53 and 55, and gear 56, which'is carried by the screw shaft 57. If, however, the operator desires the screw shaft to rotate to the right, he moves the lever 61 to the left, which engages the gear 49 with the gear 51, which meshes with the gear 53, and transmits rotation, through the gear '55, to the gear 56, of the shaft 57.

Vhat is claimed is:

1. In a gear drive, a pair of shafts to be driven, a motor, a gear train associated with the motor, a countershaft, a gear train associated with one of the driven shafts, gears on the other of the driven shafts, a shiftable transmission means on the countershaft for engagement with the first gear train, a shiftable transmission means on the countershaft for engagement with the gears of the said other driven shaft, and ashiftable transmission meanson the countershaft for engagement with the second gear train.

2. In a gear drive for l'athes, a spindle and a feed shaft, a countershaft intermediate the spindle and feed shaft, a motor, a train of gears between the motor and the countershaft, a train of gears between the countershaft and the feed shaft, gears on thespindle, a shiftable transmission means on the countershaft for regulating the speed of said shaft by the motor, a shiftable transmission means on the countershaft for regulating the driven speed of said spindle by the countershaft, and a shiftable transmission means on the countershaft for regulating the speed of the second train gears and thereby the speed of said feed shaft. 7 v

In testimony whereof, I affix my signature.

THOMAS H. one. 

